PROBLEM TO BE SOLVED: To provide a new PI (pyrrole imidazole) polyamide useful for increasing the blood HDL level, and also an anti-arteriosclerotic agent by using the PI polyamide as an active ingredient.SOLUTION: By synthesizing the PI polyamides (three types) capable of controlling the expression of human ABCA1 gene, the anti-arteriosclerotic agent by using one of the PI polyamides as the active ingredient is obtained.COPYRIGHT: (C)2012,JPO&INPIT【課題】HDLの血中レベルを上げるために有用な新規のPIポリアミドの提供。該PIポリアミドを有効成分とする抗動脈硬化剤の提供。【解決手段】ヒトABCA1遺伝子の発現を制御し得るPIポリアミド(3種)を合成し、PIポリアミドを有効成分とする抗動脈硬化剤を得た。【選択図】なし